In 1919, physicist Theodor Kaluza hypothesized that extra dimensions might solve some outstanding problems in physics. And ...

Oftentimes, we think of space as an endless, mostly empty vacuum, a silent backdrop where planets, stars, and galaxies play out their dance. We also think of time as something separate, a steady ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The idea that space-time exists is no more ...

AI–Platform 3 Compressing Cosmic Space-Time It is like buttoning the top button of a dress shirt into the bottom buttonhole ...

A supermassive monster lurks at the center of our galaxy, and astronomers have now discovered that it’s spinning so fast it’s warping the very fabric of spacetime into a football shape. According to ...

Einstein’s theory of relativity tells us that time is not absolute. It stretches, compresses, and shifts depending on one’s velocity and gravitational field. He once remarked to President Roosevelt ...